Tu Van Khao Sat Xay Dung Nhan Thanh Trung Joint Stock Company Address: Lot 33 B25 Nguyen Chich, Hoa Minh Ward, Lien Chieu District, Da Nang City Enterprise code: 0401412191 Phone: 0914174286 Representative: Do Minh Phong Adress: Hamlet 3, Duc Tan Commune, Mo Duc District, Quang Ngai Province Hoa Minh Ward, Lien Chieu District, Da Nang CityFounding date: 15 - 3 - 2011